Liquid-fuel-delivery apparatus



W. V. LA RUE LIQUID FUEL DELIVERY APPARATUS Filed Feb, 8, 1924.

' 152062260 r: MZZC'W 75a 5052M.

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Patented Feb, 10,,

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' Y Application meq'reb'i'ua y s, 1924. Serial No. 691,410}

T 0. all whom itv may concern:

Be it known. that I, 'W'IIL'IAM V. LA

a citizen of the United States, residing in the city of Goshen, county of Elkhart, and Stateof Indiana, have-invented certain new and useful Improvements in Liquid-Fuel- Delivery Apparatus, of which the following as a specification. I

This invention relates to liquid fuel pumps for supplying gasoline, or other liquid fuel,

to motor cars equipped with. internal combustion engines.

, liquid fuel, remains in the sagging supply hose after the fuel pump has ceased to operate and the operator is compelled to manu ally elevate the hose and to hold it thus for a short time to permit the fuel residue therein to drain into the motor car fuel tank. I

This is repeated many times everyday by the operator and much timelost during the busy seasons, and frequently thedrainage of the fuel from the nozzle thereof is removed ,from the mo tor car fuel tank and the remaining fuel is deposited upon the floor of the filling station, whereby many destructive fires result.

The princlpal' object of this invention is to provide means for quickly expelling the liquid fuel residue from thesupply hose of a device of the character described after the fuel pump has ceased to operate. Another object of the invention is to, provide fluid pressure means to expel the liquid fuel'residue from the sup-ply hose of a device of the character described after the fuel pump has ceased to operate.

The preferred embodiment of my invention is illustrated 'in the accompanying drawing in which'Figure 1 is a view melevation of a liquid fuel filling station pump illustrating the'application of my invention thereto, the supply hose being partially in section to disclose the fuel residue therein; and Figure 2 is an enlarged view in section of the compressed air valve used in the invention. p f 1 Similar numerals of reference indicate the hose is incomplete when 7 ike parts througho' 'i tthe several, views on the drawing.

; Referring to the details of the drawing the numeral 1 indicates a liquid fuel pump of the common'typeused at automobile filling stations for supplying gasoline to motor cars and operated 'inany suitable .man-

' ner, saidpump being provided with the discharge plpe 2 to which the usual supply hose is connected inpresent practice. My

inventioncontemplates the'connection of the valve 3 with the pum pipe 2' and the con nection of-the supply liose 4 with the opposite end of the valve 3. For this purpose the valve'3 is provided with the tubular body portion 5 and the inlet and outlet openings 6 and 7, respectively,'the end 6 bein ada tedto be screwed to the pipe 2, and ti being adapted to receive the threaded end of the hose 4, whereby the liquid fuel passes directly through the valve body 5 into the hose 4 from the pump 1 when the latter is operated. The supply hose a is provided with the usual nozzle S'adapted to be inserted in the intake opening 9 of the motor car fuel tank 10, as is well known, to enable the passage of the liquid fuel from the pump 1 to said fuel tank. I

The valve body ,5 is provided with the branch portion 11 which has the chamber 12 in communication with the/interior of the fuel conduit chamber of 5, and a valve 13 is mounted in said branch to close the farther end of the chamber 12, said valve having a stern-14 which extends to the exterior I of the branch 11 and may'have the nut 16 screw threaded thereon. A coil spring 15 may engage thev nut 16 and bear against same to normally close the valve 13.

with the branch 11 at 18 and maybe connected with a tank. or container 19 which contains compressedair received from any suitable source. A manually operable hanwhen the' opump '1 has ceased to operate, in I which position the fuel residue 23 remains therein To quickly expel the, fuel residue 23 from the hose 4 the operator admits comcompressed air supplypipe 17 is connected pressed" t6 the" valve Branch chamber 12, asdescribed, and the fuel residue is promptly discharged from the hose into the tank 10. effectually draining said hose in a discharge pipe of pumpende fiexihle delivery conduit connected With the other end, said hollow member having ayalve controlled inlet passage connected with a source of air under pressure for permitting air 1 t0 be admitted to expel the residue of liquid from the delivery conduit.

In witness whereof I have hereunto -a.fsignaturethis 25th day of January, 1924;

V WILL AM Y. LA RUE. 

